Living body guidance control method for a biometrics authentication device, and biometrics authentication device

Abstract

A biometrics authentication device identifies characteristics of the body from captured images of the body and performs individual authentication. The device guides a user, at the time of verification, to the image capture state at the time of registration of biometrics characteristic data. At the time of registration of biometrics characteristic data, body image capture state data is extracted from an image captured by an image capture unit and is registered in a storage unit, and at the time of verification the registered image capture state data is read from the storage unit and is compared with image capture state data extracted at the time of verification, and guidance of the body is provided. Alternatively, an outline of the body at the time of registration, taken from image capture state data at the time of registration, is displayed.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 2006-249682, filed on Sep. 14, 2006, the entire contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]This invention relates to a living body guidance control method for a biometrics authentication device and to a biometrics authentication device which perform individual authentication by utilize biometrics characteristics, which are characteristics of a portion of the human body, and in particular relates to a living body guidance control method for a biometrics authentication device and to a biometrics authentication device which detect biometrics characteristics by contact-free means to obtain biometrics information.[0004]2. Description of the Related Art[0005]There are numerous portions of the human body which can be used to differentiate the individual, such ...

AI Technical Summary

Benefits of technology

[0017]Hence an object of this invention is to provide a living body guidance control method for a biometrics authentication device and a biometrics authentication device to rapidly perform individual authentication, even when using contact-free means of image capture of the body.

[0019]Still a further object of the invention is to provide a living body guidance control method for a biometrics authentication device and a biometrics authentication device to enable guidance of the body according to the individual user, even when using contact-free means of image capture of the body, to improve the speed of authentication.

[0020]Still a further object of the invention is to provide a living body guidance control method for a biometrics authentication device and a biometrics authentication device to enable guidance of the body according to the individual user, even when using contact-free means of image capture of the body, to improve the efficiency of verification.

[0038]In this invention, at the time of registration of biometrics characteristic data, body image capture state data is extracted from a captured image and is registered, and at the time of verification the registered image capture state data is read and is compared with image capture state data extracted at the time of verification to provide guidance for the body. Or, an outline of the body at the time of registration, taken from the image capture state data at the time of registration, is displayed. Therefore, the user can be guided to the individual image capture states at the time of registration, and characteristic data can be extracted. Consequently even when the user has no knowledge of the image capture state at the time of registration, the image capture state at the time of registration can be reproduced at the time of verification, so that contact-free detection of biometrics characteristic data can be performed. In particular, verification failures occurring even when the person is the individual in question can be prevented, and the time required for verification can be shortened, contributing to improve the reliability of biometrics authentication.

Problems solved by technology

Hence there are many cases in which the user does not remember the state of image capture of the body part at the time of registration, and so the state of image capture of the body part at the time of authentication is different, and consequently the authentication result is not satisfactory even when the user is the individual in question.

If such cases occur frequently, the time required for authentication is increased, and moreover the user, as the individual in question, becomes increasingly distrustful of biometrics authentication.

But because the image capture configuration is not the configuration at the time of registration of the user, there is the concern that the result of verification of registered data against verification data at the time of authentication may not be satisfactory, even if guidance is provided so as to conform to the common configuration.

Further, because in actuality the human body is detected, changes in physical condition must also be considered; if there are changes in physical condition between the time of registration and the time of authentication, there may be difficulty in authenticating the user at the time of authentication even when the user is the same person, so that problems may arise.

As a consequence, impediments arise to the spread of biometrics authentication in ubiquitous devices which can be employed by anyone, anywhere, at any time.

Moreover, if verification rates are not sufficient, and if problems arise for biological or biometrics reasons, the spread of such technology may be hindered for both users and device manufacturers.

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